The giant African land snail has competition in the "strange and destructive little invasive species" department. A report released last month by University of Texas scientists shows that "crazy ants" are "invading the southeastern United States and Texas" -- including Florida.
Fire ants are notorious Florida invasives, leaving a trail of painful welts and blisters in their wake. Those pesky exotic intruders also happen to be a serious threat to some of the state's most vulnerable endemic species. This includes the Florida grasshopper sparrow, which recently made the March/April cover of Audubon Magazine as "the most endangered bird in the continental United States."